Ball valve having actuator of blow out prevention

ABSTRACT

A ball valve having an actuator of blow out prevention includes a valve body, actuator, and a ball. The valve body has a valve chamber inside thereof and a passageway, top bore, bottom bore extending from the valve chamber. The actuator has a connection portion penetrating through the top bore to the valve chamber, the connection portion has a round groove and a C-shaped buckle. The actuator serves to be rotated by an external driver. The ball inside the valve chamber serves to control the flow of the valve chamber. The ball has a connection hole engaging the connection portion of the actuator. The C-shaped buckle retains the actuator connected to the ball through buckling the round groove of the connection portion receiving inside the connection hole of the ball so that the actuator will not blow out by the pressure of the valve during a damage or maintenance.

FIELD OF THE INVENTION

The present invention relates to valve, and particular to a ball valvehaving an actuator of blow out prevention to prevent damage or danger.

DESCRIPTION OF THE PRIOR ART

Known ball valve includes a valve body having a chamber and passagewaylinking to the chamber, a top bore, and a bottom bore. An actuatorpenetrates through the top bore into the chamber to rotate a ball insidethe chamber to open or close the valve. The ball is arranged to a valveseat to control the flow of the fluid passing through the valve.

However, the actuator is easily blowing out from the valve body by thepressure of the fluid inside the valve during a maintenance or repairoperation which is very dangerous to the operator and facility.

SUMMARY OF THE PRESENT INVENTION

Accordingly, the primary object of the present invention is to provide aball valve having an actuator of blow out prevention to prevent dangerand loss during operation.

To achieve above object, the ball valve having an actuator of blow outprevention includes a valve body, actuator, and a ball. The valve bodyhas a valve chamber inside thereof and a passageway, top bore and abottom bore extending from the valve chamber. The actuator has aconnection portion penetrating through the top bore to the valvechamber, the connection portion has a round groove and a C-shapedbuckle. The actuator serves to be rotated by an external driver. Theball inside the valve chamber serves to control the flow of the valvechamber, the ball has a connection hole engaging the connection portionof the actuator. The C-shaped buckle retains the actuator connected tothe ball through buckling the round groove of the connection portionreceiving inside the connection hole of the ball so that the actuatorwill not blow out by the pressure of the valve during a damage ormaintenance.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing a preferable embodiment of thepresent invention.

FIG. 2 is a cross-section view showing the preferable embodiment of thepresent invention.

FIG. 3A is a cross-section view showing the C-shaped buckle of thepresent invention.

FIG. 3B is a schematic view showing the C-shaped buckle of the presentinvention.

DETAILED DESCRIPTION OF THE INVENTION

In order that those skilled in the art can further understand thepresent invention, a description will be provided in the following indetails. However, these descriptions and the appended drawings are onlyused to cause those skilled in the art to understand the objects,features, and characteristics of the present invention, but not to beused to confine the scope and spirit of the present invention defined inthe appended claims.

Referring to FIG. 1, a preferable embodiment of the present inventionincludes the following components.

A valve body 1 has a valve chamber 10 and a passageway 11 extending fromthe valve chamber 10. The valve body 1 has a top bore 101 and a bottombore 103 on the top and the bottom respectively.

An actuator 2 penetrates the top bore 101 to the valve chamber 10. Theactuator 2 is linked to a valve driver (not shown) to rotate theactuator 2. An end of the actuator 2 has a connection portion 20 and around groove 21. A C-shaped buckle 22 can be buckled into the roundgroove 21.

A ball 3 is arranged inside the valve body 10. The ball 3 has aconnection hole 30 to receive and engage the connection portion 20 ofthe actuator 2 so that the ball 3 can be rotated through the actuator 2.The ball 3 has a spherical surface 31 to block the passageway 11 so asto control the flow of the fluid passing through the valve. Thespherical surface 31 can be turned towards the passageway 11 so as toclose the valve to block the fluid from passing through the valve. Thespherical surface can be turned away from the passageway 11 so as toallow the fluid passing through the valve. An end of the ball 3 isrotatably arranged to the bottom bore 103 of the valve body 1.

Referring to FIG. 2, the C-shaped buckle 22 is buckled into the roundgroove 21. The width of the C-shaped buckle 22 is wider than the depthof the round groove 21 so that the C-shaped buckle 22 buckled into theround groove 21 is protruded from the actuator 2.

The connection portion 20 of the actuator 2 is received into theconnection hole 30 of the ball 3. The round groove 21 of the connectionportion 20 penetrating the connection hole 30 is buckled by the C-shapedbuckle 22. The protruded C-shaped buckle 22 will impeded by an innerwall of the ball so that the actuator 2 will be retained within the ballvalve.

Through the buckling of the C-shaped buckle 22, the actuator 2 isretained by the ball 3 so that the actuator 2 will not blow out from thevalve by the pressure inside the valve during operation or maintenance.The C-shaped buckle 22 is made of hard material such as metal, stainlesssteel, or metal alloy.

The present invention is thus described, it will be obvious that thesame may be varied in many ways. Such variations are not to be regardedas a departure from the spirit and scope of the present invention, andall such modifications as would be obvious to one skilled in the art areintended to be included within the scope of the following claims.

1. A ball valve having an actuator of blow out prevention comprising: avalve body having a valve chamber, a passageway extending from the valvechamber, a top bore, and a bottom bore; an actuator penetrating throughthe top bore into the valve body; the actuator connected to a valvedriver to rotate the actuator; the actuator having a connection portionon an end thereof; the connection portion having a round groove; a ballarranged inside the valve chamber; the ball having a spherical surfaceserving to open and close the linking between the passageway and thevalve chamber; the ball having a connection hole receiving theconnection portion of the actuator; and a C-shaped buckle received intothe round groove; an outer diameter of the C-shaped buckle being greaterthan a depth of the round groove; wherein the connection portion of theactuator penetrates the top bore and the connection hole, and the roundgroove of the connection portion is positioned inside the ball and isbuckled by the C-shaped buckle so as to retain the actuator from blowingout of the ball; since the outer diameter of the C shaped buckle isgreater than a depth of the round groove of the actuator; an outer sideof an upper surface of the C shaped buckle around the connection holeresists against an inner wall of the ball and an inner side of the uppersurface of the C shaped buckle is confined within the round groove sothat the actuator will not relief from the ball.
 2. The ball valvehaving an actuator of blow out prevention as claimed in claim 1, whereinthe ball is a sphere or a hemisphere.
 3. The ball valve having anactuator of blow out prevention as claimed in claim 1, wherein the Cshaped buckle is a 360 buckle having a slit penetrating through a bucklebody and each of two sides of the C shaped buckle is expanded.